CN104994450A - Direction-guiding device - Google Patents

Direction-guiding device Download PDF

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Publication number
CN104994450A
CN104994450A CN201510244351.1A CN201510244351A CN104994450A CN 104994450 A CN104994450 A CN 104994450A CN 201510244351 A CN201510244351 A CN 201510244351A CN 104994450 A CN104994450 A CN 104994450A
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doppler effect
loud speaker
sound
generation unit
signal generation
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CN104994450B (en
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吴坦
张岐玮
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Yang Minglong
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Yang Minglong
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Abstract

The invention discloses a direction-guiding device and belongs to the technical field of electronic audio control. The direction-guiding device is connected with a monitoring center of an area where in the direction-guiding device is located, and comprises a Doppler effect signal generating unit and a loudspeaker connected with the Doppler effect signal generating unit. The Doppler effect signal generating unit is used for receiving path direction information transmitted from the monitoring center and transmitting an electronic signal capable of generating a Doppler effect sound to the loudspeaker according to the path direction information. The loudspeaker is used for receiving the electronic signal transmitted from the Doppler effect signal generating unit, converting the electronic signal into a sound signal, and making a sound. The direction-guiding device enables a user to be provided with reliable sense of direction even in emergency, and greatly improves escape efficiency and probability in emergency.

Description

A kind of direction guiding equipment
Technical field
The present invention relates to electronic audio frequency control technology field, be specifically related to a kind of direction guiding equipment of the change based on sound.
Background technology
The sound equipment guide device be present at present on market is all almost designed by visually impaired person, the steering signal that these these equipment produce include language instruction steering signal and with the steering signal of density degree changing fixed-audio appearance.
The steering signal of language instruction, first needs recipient can understand this language, and next needs recipient can the content of analytic language, especially about the instruction in direction, usually also needs other sensory information, the cooperation of such as vision or sense of touch.This just makes the scope judged beyond recipient's intuition by this kind of steering signal travel direction instruction.
The content that the density degree occurred to change fixed-audio can represent as steering signal is very limited.The fixed-audio of this signal is equivalent to carrier wave, and its density degree only can effectively represent be, the information of no (being equivalent to binary one and 0).So in daily use, the information of generally only going for visually impaired person provides, stopping in the traffic light signal gone across the road.
Because the object of sound equipment guide device design is to the assistance with visually impaired person necessity under daily life situation, and the psychological condition of these current sound equipment guide devices when not considering that ordinary person is in emergency, so when the condition of a disaster occurs, the assistance very limited with the masses can only be given.Such as a smoky scene of fire, a normal person is because life is subject to direct threat, and the visual perception usually relied on most is subject to the obstruction of smog, causes great pressure to its psychology.In this case, his sensory analysis ability can be subject to great impact.In general, the ability for the correct implication of resolve voice information from noisy environment can significantly decline; If involve foreign language or dialect, misread and more become inevitable phenomenon, and now a wrong selection probably causes fatal consequence.Under this unsafe condition, how to utilize control electronics, reacted by the intuition of the mankind, provide effective solution to be main purpose of the present invention.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of direction guiding equipment, by this equipment, even if make people can produce reliable sense of direction under dangerous situation, greatly improve the escape efficiency under unsafe condition and probability.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of direction guiding equipment, this direction guiding equipment is connected with its Surveillance center arranging the region at place, comprises Doppler effect signal generation unit, and the loud speaker be connected with Doppler effect signal generation unit;
Described Doppler effect signal generation unit, for receiving the path direction information that described Surveillance center sends, and sends the electronic signal that can produce Doppler effect sound to loud speaker according to described path direction information;
Described loud speaker, for receiving the electronic signal that Doppler effect signal generation unit sends, and being converted to acoustical signal by this electronic signal, sounding.
Further, a kind of direction guiding equipment as above, described loud speaker is active loudspeaker.
Further, a kind of direction guiding equipment as above, this direction guiding equipment also comprises audio-frequency power amplifier, and the input of audio-frequency power amplifier is connected with Doppler effect signal generation unit, and output is connected with loud speaker.
Further, a kind of direction guiding equipment as above, described Doppler effect signal generation unit is the first central processing unit; Or,
Described Doppler effect signal generation unit comprises the second central processing unit, and the Doppler effect signal generator be connected with the second central processing unit;
Described second central processing unit is connected with described Surveillance center, for receiving the path direction information that Surveillance center sends, and sends signal generation instruction according to described path direction information to Doppler effect signal generator;
Described Doppler effect signal generator is connected with loud speaker, and for producing instruction according to described signal, the electronic signal that can produce Doppler effect sound is sent to loud speaker.
Further, a kind of direction guiding equipment as above, described Doppler effect sound refers to the sound meeting Doppler effect principle, comprise away from Doppler effect sound and close Doppler effect sound; Described away from Doppler effect sound refer to utterance duration, the sound that frequency and volume improve gradually; Described close Doppler effect sound refers to the sound reduced gradually with utterance duration, frequency and volume.
Further, a kind of direction guiding equipment as above, described loud speaker is arranged in the passage of building, and the distance of the outlet of loud speaker and passage is less than setpoint distance; Described path direction information comprises the information in safe escape path.
Further, a kind of direction guiding equipment as above, described Doppler effect signal generation unit comprises:
First signal generation unit, for when safe escape path is through certain outlet, the loud speaker being less than setpoint distance to the distance with this outlet send can produce away from the electronic signal of Doppler effect sound;
Secondary signal generation unit, for when safe escape path exports without certain, the loud speaker being less than setpoint distance to the distance with this outlet sends the electronic signal that can produce close Doppler effect sound.
Further, a kind of direction guiding equipment as above, described Doppler effect signal generation unit comprises:
Sounding sequence control unit, for receiving the control command for control loudspeaker sounding order that described Surveillance center sends, and send the electronic signal that can produce Doppler effect sound successively to loud speaker according to the loud speaker sounding order in this control command.
Further, a kind of direction guiding equipment as above, described Doppler effect signal generation unit sends the electronic signal that can produce Doppler effect sound of different audio frequency to the loud speaker being arranged in different passage.
Further, a kind of direction guiding equipment as above, described loud speaker is to control the directionality speaker that direction and scope occur for it.
Beneficial effect of the present invention is: direction guiding equipment of the present invention, the intuition of the mankind is utilized to react, even if make people when limited sight, also reliable sense of direction can be produced, especially under the emergency situations such as fire, this direction guiding equipment effectively can assist escape, substantially increases efficiency and the probability of escape, effectively reduces casualties.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of direction guiding equipment provided by the invention;
A kind of schematic diagram of direction guiding equipment of Fig. 2 for providing in the specific embodiment of the invention;
The schematic diagram of another kind of direction guiding equipment of Fig. 3 for providing in the specific embodiment of the invention;
Fig. 4 is the interior of building access diagram of embodiment one in embodiment;
Fig. 5 A and Fig. 5 B is the structural representation of active loudspeaker in embodiment one;
Fig. 6 is the interior of building access diagram of embodiment two in embodiment.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail.
Main purpose of the present invention is when dangerous situations such as building generation fire alarms, for being in the personnel of interior of building, at rational cost-range, provides an effective guide device to assist escape, to reach the target reducing or exempt casualties.
Design the factor that this equipment clearly needs to study, analysis two is important.One is physics, the chemical state at scene when there is fire alarm in building; Two is the suffered in this environment restrictions of human body.
First, when there is fire alarm in building, its high-temp combustion region is only limitted to the fraction scope of building usually; But the smog caused owing to burning then may spread and sizable scope of covering building.The danger of this smog generally includes two: it can hinder visible ray on the one hand, and visibility is significantly declined; On the other hand in smog containing poisonous or have the material of intense stimulus in a large number, vision (dropping tears) can be disturbed, respiratory tract (cough, have a running nose) even makes people suffocate and poisoning.In this environment, the vision in three main remote probe functions of people and sense of smell are subject to severe jamming, almost lose function at place.So the guide device of general illumination class will lose function, at this time effective escape guiding must be provided by the sense of hearing of people.
When providing sense of hearing escape guidance function, also must consider and some special statuss that human body is residing in fire alarm environment the judgment of human brain and action edge can be made to be subject to very important impact.
First, the scene of fire alarm is usually very noisy and chaotic, and the sound etc. caused when having alarm song, the shriek of people, people in action, these not only can disturb the sense of hearing, also can cause alarmed psychology to people, from the external action judgement of health.
Second, if be in the area that smog has spread, not only sight line has been subjected to obstruction to a certain degree, and sense of smell is subject to certain stimulation, health can make cough, have a running nose, the pathological reaction of a series of discomfort such as to drop tears, and there is excitant and toxic fumes also can life-threatening, form powerful psychological pressure, from the internal influence judgement of health.
3rd, a well-appointed building, the two ends of its each passage are all provided with fire resistant doorsets.When there is fire alarm, fire resistant doorsets are closed automatically.Now, the personnel withdrawn because of fire alarm are after room admission passage, and at once in the face of selections: should leave safer by which door among two doors, if do not guided, then the probability of selecting properly is 50%.Suppose on average just will to reach safety area by 3 doors, then can select correct people only 12.5% for 3 times continuously.In other words, the display of pure statistics, may have the people of 87.5% will in the face of injures and deaths.So correct guiding is indispensable.
4th, how to provide correct guiding to be the key reducing injures and deaths.When a people enters a passage at random, he faced by direction be also random.So one is arranged on the guide device in passage, i.e. the enable existence detecting him, also cannot know the direction faced by him.In other words, he with the direction all around of he individual, cannot be directed into home by guide device accurately.
5th, based on the different in kind of fire scene, may have different nationality or use the people of different language to come in and go out, this makes to adopt language to create ambiguity as guiding the instrument of escape, and risk is improved relatively.
6th, because everyone is to the sample of having various reactions of volume, and sound can because multipath reflection mix, so adopt single loud speaker as guiding tool in a flame proof passageway, even after adding real-time change volume functions, its practicality is still quite disputed on.
Due to more than, use the means of mode as escape guiding of voice in traditional vision, sense of smell or the sense of hearing at fire scene, the reliability that seems is relatively on the low side.
Excellent escape guiding equipment must can pay attention to the negative effect that fire scene causes the perception of individual and judgement, avoids the logic analysis ability of undue dependence people.The most reasonable approach utilizes mankind's the inborn instinct, excites the hereditary potency from ancient times passed on, and under the guiding of intuition, completes the process of escape.Based on above-mentioned consideration, the present invention adopts the sound Doppler effect of simulation, as the theoretical foundation of design escape guide device.
According to physics principle, the transmission speed of sound is the product of wavelength and frequency.The ear structure of people can adapt to this physical phenomenon completely.When not having relative motion between source of sound and the people listened to, the ear of people can obtain stable frequency from source of sound, and it is cognitive to audio environment that this just forms the mankind, comprises the basis that language is differentiated.
When there is relative motion between source of sound and the people listened to, the time that both relative velocities make sound wave arrive at listener, ahead of time or delayed this changed with regard to making the frequency received by listener.If source of sound is close gradually to listener, then the frequency heard improves gradually, and sound is high gradually.If source of sound is gradually away from listener, then the frequency heard reduces gradually, and sound is overcast gradually.This phenomenon is found in 1842 by Austrian physicist Doppler at first.The mathematic(al) law that it is observed is as follows:
The frequency relation of listener (Listener) and source of sound (Source) is:
The frequency of f ' for observing;
F launches the original transmitted frequency come from this medium;
υ is ripple gait of march in the medium;
υ ofor observer is relative to the translational speed of medium, if close to emission source, front oeprator is+number, otherwise be then-number;
for emission source is relative to the translational speed of medium, if close to observer, front oeprator is-number, otherwise be then+number.
In daily life or movie and video programs, the train come rapidly in distant place sound of blowing a whistle becomes tapering (i.e. frequency gets higher, wavelength shortens), and becomes overcast (i.e. frequencies go lower from our train sound of blowing a whistle, wavelength is elongated), be exactly the phenomenon of Doppler effect.The mankind almost create intuition reaction for the phenomenon of Doppler effect: be in on-the-spot people, are not needing through thinking deeply, just from the change of frequency, can sense that object is close to oneself at once, or go away from oneself.
This ability can be one of human instinct.Before the mankind enter agricultural society, through going on a hunting trip and gathering (hunter and gatherer) the derivation stage.(or millions of year in hundreds thousand of year is reached at this, this point is still disputable) process in, a mankind's existence part relies on to follow the trail of in grassland hunts animal, the more important thing is and avoid being hunted by carnivore, or impacted by larger animal (as if, rhinoceros, wild ox group etc.).In grassland, when sight line is subject to environment obstruction, the sense of hearing just becomes the important means ensureing life.And Doppler effect can be dangerous source, especially in directivity, provide clearer and more definite instruction.Theoretical according to the organic evolution of Darwin (Charles Darwin): the gene that survival ability is stronger, be able to spread from generation to generation.So people in modern age has the gene to the reaction of Doppler effect intuition.Here it is, and why most people can both inherent resolution such as train be close to oneself, still away from.Due to the reaction that this is a kind of intimate instinct, even if so be in the clutter environment of this powerful psychological pressure of picture fire alarm, people still can make correct reaction.The present invention is based on this reason, select Doppler effect as the Main Means of escape guiding.
Next step will consider how Doppler effect is applied to fire alarm environment.Because be because the relative motion between source of sound and listener caused at home Doppler effect.When fire alarm occurs, utilize a pan obviously unrealistic to produce Doppler effect in the channel.So need a kind of design, effectively can simulate Doppler effect in this environment, reach the object guiding escape.
Simulate the method for Doppler effect in the channel: a loud speaker is respectively installed at the two ends of passage.When entering escape guiding state, control system, according to the logic designing in advance and test, orders the loud speaker of dangerous one end to send caution sound high gradually, such as train is blown a whistle sound, makes the people in passage feel have train sailing to them.Then, after suitable time delay, the loud speaker being positioned at safe one end sends identical caution sound overcast gradually, such as train is blown a whistle sound, makes the people in passage think that train goes away from them just gradually.This mode can crowd effectively in guiding channel, follows the direction of train (or other analogies), moves towards correct means of escape.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of protection of the invention.
Fig. 1 shows the schematic diagram of a kind of direction guiding equipment provided by the invention, this direction guiding equipment needs to be connected with its Surveillance center 10 arranging the region at place, this equipment is all generally arrange between floors, when there is emergency situation, the Surveillance center 10 of building is by sending the relevant information in safe escape path to direction guiding equipment, the relevant information that direction guiding equipment sends according to Surveillance center 10 instructs personnel escape.
As can be seen from Fig. 1, the loud speaker 40 that described direction guiding equipment mainly can comprise Doppler effect signal generation unit 20 and be connected with Doppler effect signal generation unit 20.
Wherein, described Doppler effect signal generation unit 20, for receiving the path direction information that described Surveillance center 10 sends, and sends the electronic signal that can produce Doppler effect sound to loud speaker 40 according to described path direction information.
In present embodiment, described Doppler effect sound refers to the sound meeting Doppler effect principle of simulation, comprise away from Doppler effect sound and close Doppler effect sound; Described away from Doppler effect sound refer to utterance duration, the sound that frequency and volume improve gradually, as train far go time, the sound that the tone that people experiences is more and more lower; Described close Doppler effect sound refers to the sound reduced gradually with utterance duration, frequency and volume, as train head-on sail come time, the sound that the tone that people experiences is more and more higher.Described path direction information comprises the information in safe escape path.
Described loud speaker 40, for receiving the electronic signal that Doppler effect signal generation unit 20 sends, and being converted to acoustical signal by this electronic signal, sounding.Enough large in order to ensure the volume of loud speaker, in present embodiment, described loud speaker 40 directly can adopt active loudspeaker, and namely loud speaker is originally as the loud speaker with power amplifier; If loud speaker 40 is passive speaker, this direction guiding equipment can also comprise audio-frequency power amplifier 30 (power amplifier), and the input of audio-frequency power amplifier 30 is connected with Doppler effect signal generation unit 20, and output is connected with loud speaker 40.
In present embodiment, described loud speaker 40 is generally arranged in the passage of building.Preferably, loud speaker 40 is installed in the channel from the position close to outlet (emergency exit as in passage), namely loud speaker 40 is less than setpoint distance with the distance of the outlet in passage, if there is outlet at the two ends of passage, generally near two outlets, all installs loud speaker 40.When emergency situation, loud speaker 40 is by the whether safety of the outlet near this loud speaker of reminding user of sounding.Certainly, if only have an outlet in certain passage, only can install loud speaker 40 at passage near one end of outlet, also all can install at the two ends of passage, dangerous one end is then thought in the one end now do not exported under emergency situation.Wherein, the number of the loud speaker installed near a door can be one, also can be multiple.Certainly, if multiple, the audio frequency of the loud speaker 40 near same door should be identical and synchronous.
In order to reduce loud speaker 40 in different passage sound between interference, Doppler effect signal generation unit 20 sends the electronic signal that can produce Doppler effect sound of different audio frequency to the loud speaker 40 being arranged in different passage.Such as, the loud speaker in a passage can be made to send train and to blow a whistle the Doppler effect sound of sound, in another passage, loud speaker then sends the Doppler effect sound of police whistle sound.
The sound sent to make loud speaker 40 is only transmitted to the direction and scope that cover desired by channel interior, and in present embodiment, described loud speaker 40 can adopt the directionality speaker that can control its voice directions and scope.
In present embodiment, described Doppler effect signal generation unit 20 can comprise the first signal generation unit and secondary signal generation unit.
First signal generation unit, for when safe escape path is through certain outlet, the loud speaker being less than setpoint distance to the distance with this outlet send can produce away from the electronic signal of Doppler effect sound;
Secondary signal generation unit, for when safe escape path exports without certain, the loud speaker being less than setpoint distance to the distance with this outlet sends the electronic signal that can produce close Doppler effect sound.
When the diverse location of the passage of building has installed multiple loud speaker 40, in order to can control realization to loud speaker 40 pronunciation order control, in present embodiment, described Doppler effect signal generation unit 20 can also comprise sounding sequence control unit.
Sounding sequence control unit, for receiving the control command for control loudspeaker 40 sounding order that described Surveillance center 10 sends, and send the electronic signal that can produce Doppler effect sound successively to loud speaker 40 according to the sounding order of the loud speaker 40 in this control command.
The Doppler effect signal generation unit 20 of two kinds of forms is provided, as shown in Figures 2 and 3 in present embodiment.
Doppler effect signal generation unit 20 shown in Fig. 2 can be the first central processing unit 21, this first central controller 21 carries out telecommunications by its external communication interface and Surveillance center 10, and receive the path direction information of Surveillance center's transmission, the electronic signal that can produce Doppler effect sound is produced according to this path direction information.Therefore, described first central processing unit 21 includes information receiving module and Doppler effect signal generator module.
The Doppler effect signal generator 23 that Doppler effect signal generation unit 20 shown in Fig. 3 includes the second central processing unit 22 and is connected with the second central processing unit 22.
Described second central processing unit 22 is connected with described Surveillance center 10, for being received the path direction information that Surveillance center 10 sends by its external communication interface, and send signal generation instruction according to described path direction information to Doppler effect signal generator 23;
Described Doppler effect signal generator 23 is connected with loud speaker 40, and for producing instruction according to described signal, the electronic signal that can produce Doppler effect sound is sent to loud speaker 40.
That is, Doppler effect signal generation unit 20 in present embodiment can adopt a central processing unit being integrated with information receiving module and Doppler effect signal generator module to realize, and also can adopt a central processing unit and an independently Doppler effect signal generator realization.
In present embodiment, the electronic signal that can produce Doppler effect sound that Doppler effect signal generation unit 20 sends to loud speaker 40, can be stored in advance in the electronic signal in Doppler effect signal generation unit 20, also can be produced in real time when receiving the path-related information that Surveillance center 10 sends by Doppler effect signal generation unit 20.
The direction guiding equipment provided in embodiment of the present invention, its minimum scope of application be in building one be provided with in the passage of outlet (being generally fire resistant doorsets), all fire resistant doorsets can be installed according to two ends general in fire codes passage, if only have fire resistant doorsets in passage, under emergency situation, the other end of passage then can think non-security exit end.By the direction guiding equipment provided in present embodiment, when in building, emergency situation occurring, during as fire, the Surveillance center 10 of building can coordinate the building design drawing of building according to its monitor data in the past, make safe escape path, the secure path data of each passage is sent to a Doppler effect signal generation unit 20 for path respective channel by Surveillance center 10 respectively, after Doppler effect signal generation unit 20 receives the data of Surveillance center 10 transmission, just can know which outlet in passage two ends is relatively safe, and send the suitable electronic signal that can produce Doppler effect to loud speaker 40 on this basis, if outlet is safe, then send and can produce Doppler effect electronic signal away from this outlet, if outlet is not safe, what then send this outlet of trend can produce Doppler effect electronic signal.Be arranged in the personnel of passage, the sound that just can send according to loud speaker in passage 40, instinct judge extra exit, leave building fast.
In actual use, such as this direction guiding equipment is installed in a building, the relevant control that can realize the loud speaker 40 in all passages by a total Doppler effect signal generation unit 20, also can be have each self-corresponding Doppler effect signal generation unit 20 in each passage, the Doppler effect signal generation unit 20 corresponding by respective passage carries out relevant control to the loud speaker in respective passage.
It should be noted that, the above-mentioned direction guiding equipment provided in present embodiment, except each several part comprising foregoing description, also comprises other part known in those skilled in the art certainly, such as equipment provides the power module etc. of working power, describe no longer one by one at this.
In actual applications, described direction guiding equipment when mounted, for described loud speaker 40, if adopt active loudspeaker, then can Doppler effect signal generation unit 20 (comprising its external communication interface) and loud speaker 40 will be arranged in same cabinet.If adopt passive speaker 40, then loud speaker 40 can be arranged on passage appropriate location, and Doppler effect signal generation unit 20 (comprising its external communication interface) and audio-frequency power amplifier (power amplifier) 13 etc. can be installed in the cabinet being positioned at other place.
For a better understanding of the present invention, below in conjunction with embody rule scene in embodiment, direction guiding equipment provided by the present invention is further described.
Embodiment one
The application scenarios of the present embodiment as shown in Figure 4, it is a typical interior of building path 10 0, its two ends are respectively path 10 1 and 102, according to fire codes path 10 0 two ends, fire resistant doorsets 103 and 104 are installed respectively, when there is fire alarm, fire resistant doorsets can be closed immediately, stretch with fire resistant and smog.But now fire resistant doorsets 103,104 are only closed, and not lower lock, if there is people to want to pass through, still can push open.
Above fire resistant doorsets 103,104, respectively an active loudspeaker 105,106 is installed in the present embodiment.The internal structure of these two active loudspeakers is identical with function.As fig. 5 a and fig. 5b, for fire resistant doorsets 103, its inside of active loudspeaker 105 contains loudspeaker 115 and drives the power amplifier 111 of loudspeaker 115 structural representation of the direction guiding equipment in the present embodiment; Doppler effect signal generation unit contain can with the central processing unit 113 of external communication and the Doppler effect signal generator 112 that can send Doppler effect audio frequency sound source electronic signal, power module 114 is for powering for guide device.For fire resistant doorsets 104, direction guiding equipment includes power amplifier 121, signal generator 122, central processing unit 123, power module 124 and loudspeaker 125.
Confirm after interior of building generation fire alarm in the fire alarm monitoring system of whole solitary building, if it has suitable algorithm and computing capability, just can calculate best escape pattern and path in building.Then according to result of calculation, send instruction to the central processing unit 113 and 123 in each passage according to sequential respectively, notice escape time and direction.
Such as: among path 10 0, fire resistant doorsets 104 are best escape direction as calculated, then central processing unit 113 is after receiving instruction, and command signal generator 112 sends the train leaving fire resistant doorsets 103 and to blow a whistle Doppler signal, drives loudspeaker 115 to send audio frequency by power amplifier 111.The characteristic of this signal is the duration along with sounding, and frequency improves gradually, volume increases gradually, and its speed improving and increase can the true train operational conditions of extreme narrowing approximation.So, the people in path 10 0, no matter be in the face of that direction, can be errorless recognize that train is to oneself sailing.After several seconds, loud speaker 105 stops pronunciation.
Then take turns to central processing unit 123 after receiving instruction, the train that command signal generator 122 sends trend fire resistant doorsets 104 is blown a whistle Doppler signal, drives loudspeaker 125 to send audio frequency by power amplifier 121.The characteristic of this signal is the duration along with sounding, and frequency reduces gradually, volume reduces gradually, and it reduces and the speed of reduction can the true train operational conditions of extreme narrowing approximation.So, the people in path 10 0, no matter be in the face of that direction, can be errorless recognize that train sails out of from oneself.After several seconds, loud speaker 106 stops pronunciation.
In this process, the people of path 10 0, clear and definite experiences the virtual train of row drives towards fire resistant doorsets 104 position from the position of fire resistant doorsets 103.If these people accepted this prompting of following train action when usual fire drill or training, or were hearing the front and back of Doppler's audio, give this prompting, so the people of the overwhelming majority should follow virtual train and arrive safe area.
Embodiment two
The application scenarios of the present embodiment as shown in Figure 6, four passages be connected 201,202,203 and 204 in a building, basic facilities in building are identical with embodiment one, fire resistant doorsets 301 and loud speaker 401 is had in passage 201, fire resistant doorsets 302 and loud speaker 402 is had in passage 202, there are fire resistant doorsets 303,304 and loud speaker 403,404 in passage 203, in passage 204, have fire resistant doorsets 305 and loud speaker 405.
Although consider and have fire resistant doorsets to be cut off between passage, if the sound of loud speaker is not through special processing, still mutually disturbed by sizable chance.
In order to further ensure the effect of audio frequency escape guiding, 2 measures can be taked:
1. adopt the loud speaker of directivity, its sound is only transmitted to direction and the scope of the desired covering of channel interior.
2., in any two passages be connected, use different audios, avoid confusion.
In the present embodiment, the pronunciation direction of loud speaker 401 is as shown in arrow 501, and as illustrated by an arrow 502, the pronunciation direction of loud speaker 403 as indicated by arrow 503 in the pronunciation direction of loud speaker 402, as indicated by arrow 504, the pronunciation direction of loud speaker 405 as indicated by the arrow 505 in the pronunciation direction of loud speaker 404.
When needs guiding escape, Doppler effect signal generation unit 20 loud speaker controlled in variant passage sends the sound of different audio frequency, such as, in the channel 201, uses train to blow a whistle sound; In passage 202, use police whistle sound; In passage 203, use low altitude aircraft sound; In passage 204, use the sound of blowing a whistle of general-utility car.According to four-color map principle, altogether only need with 4 kinds of different prompt tones, just can ensure any adjacent passage, all use different prompt tones, send the trend Doppler effect sound of fire exit door or the Doppler effect sound away from fire exit door by the loud speaker controlled on different fire exit door, reach the object of guiding personnel safety moving.
In order to the function of this escape guiding of more effective performance, using for frequent the people that the building of this equipment is housed, can illustrate when preventing fires manoeuvre, even can allow their personal experience by simulator.As for the visitor generally not participating in fire prevention manoeuvre, based on " group mentality ", when fire alarm occurs, major part also can be followed the escape masses and be arrived safety place.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technology thereof, then the present invention is also intended to comprise these change and modification.

Claims (10)

1. a direction guiding equipment, the Surveillance center (10) that this direction guiding equipment arranges the region at place with it is connected, it is characterized in that: comprise Doppler effect signal generation unit (20), and the loud speaker (40) be connected with Doppler effect signal generation unit (20);
Described Doppler effect signal generation unit (20), for receiving the path direction information that described Surveillance center (10) sends, and send the electronic signal that can produce Doppler effect sound to loud speaker (40) according to described path direction information;
Described loud speaker (40), for receiving the electronic signal that Doppler effect signal generation unit (20) sends, and being converted to acoustical signal by this electronic signal, sounding.
2. a kind of direction guiding equipment according to claim 1, is characterized in that: described loud speaker (40) is active loudspeaker.
3. a kind of direction guiding equipment according to claim 1, it is characterized in that: this direction guiding equipment also comprises audio-frequency power amplifier (30), the input of audio-frequency power amplifier (30) is connected with Doppler effect signal generation unit (20), and output is connected with loud speaker (40).
4. a kind of direction guiding equipment according to claim 1, is characterized in that: described Doppler effect signal generation unit (20) is the first central processing unit (21); Or,
Described Doppler effect signal generation unit (20) comprises the second central processing unit (22), and the Doppler effect signal generator (23) be connected with the second central processing unit (22);
Described second central processing unit (22) is connected with described Surveillance center (10), for receiving the path direction information that Surveillance center (10) sends, and send signal generation instruction according to described path direction information (10) to Doppler effect signal generator (23);
Described Doppler effect signal generator (23) is connected with loud speaker (40), and for producing instruction according to described signal, the electronic signal that can produce Doppler effect sound is sent to loud speaker (40).
5. according to a kind of direction guiding equipment one of Claims 1-4 Suo Shu, it is characterized in that: described Doppler effect sound refers to the sound meeting Doppler effect principle, comprise away from Doppler effect sound and close Doppler effect sound; Described away from Doppler effect sound refer to utterance duration, the sound that frequency and volume improve gradually; Described close Doppler effect sound refers to the sound reduced gradually with utterance duration, frequency and volume.
6. a kind of direction guiding equipment according to claim 5, is characterized in that: described loud speaker (40) is arranged in the passage of building, and loud speaker (40) is less than setpoint distance with the distance of the outlet of passage; Described path direction information comprises the information in safe escape path.
7. a kind of direction guiding equipment according to claim 6, is characterized in that: described Doppler effect signal generation unit (20) comprising:
First signal generation unit, for when safe escape path is through certain outlet, the loud speaker being less than setpoint distance to the distance with this outlet send can produce away from the electronic signal of Doppler effect sound;
Secondary signal generation unit, for when safe escape path exports without certain, the loud speaker being less than setpoint distance to the distance with this outlet sends the electronic signal that can produce close Doppler effect sound.
8. a kind of direction guiding equipment according to claim 7, is characterized in that: described Doppler effect signal generation unit (20) comprising:
Sounding sequence control unit, for receiving the control command for control loudspeaker sounding order that described Surveillance center sends, and send the electronic signal that can produce Doppler effect sound successively to loud speaker according to the loud speaker sounding order in this control command.
9. a kind of direction guiding equipment according to claim 8, is characterized in that: described Doppler effect signal generation unit (20) sends the electronic signal that can produce Doppler effect sound of different audio frequency to the loud speaker (40) being arranged in different passage.
10. a kind of direction guiding equipment according to claim 1, is characterized in that: described loud speaker (40) is to control the directionality speaker that direction and scope occur for it.
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